Tire Sidewall Mark Structure to Prevent Mud Clogging
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Solution Overview
Problem
Pneumatic tires with serrated marks on the sidewall are prone to mud clogging, which deteriorates legibility and cleaning, especially on muddy roads.
Innovation Solution
The tire features a mark on the sidewall with a wavy, uneven outer surface having two to four peaks, designed to prevent mud clogging while maintaining visibility and aesthetic appeal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the mark has serrations with fine pitches, then the mark becomes conspicuous with light reflection, but the mark is easily clogged with mud
Solution Approach 1:
The patent applies curvature by replacing the conventional serrated (angular) mark surface with a wavy curved surface. The outer surface of the mark includes a wavy curved face with two or more peaks and valleys, creating a smooth curved profile rather than sharp angles. This curved configuration prevents mud from adhering and clogging the mark while still providing light reflection variations through the undulating shape, thus resolving the contradiction between conspicuousness and mud resistance
Solution Approach 2:
The patent changes the geometric parameters of the mark surface from fine-pitched serrations to a wavy pattern with specifically controlled peak spacing. The distance between adjacent peaks is set to 3 mm or more, which is a critical parameter change that prevents mud bridging while maintaining optical effectiveness. This parameter modification allows the mark to remain conspicuous through light reflection from multiple peaks while avoiding the mud clogging issue associated with finer pitches
2Illumination intensity
If the mark has serrations with different angles, then light reflection creates light and shadow variations, but cleaning becomes difficult
Solution Approach 1:
The patent replaces angular serrations with smooth wavy curves having rounded peaks and valleys. This curved surface configuration eliminates sharp corners where mud tends to accumulate, making the mark easier to clean.同时, the undulating curved face still creates multiple light reflection angles, producing effective light and shadow variations for mark conspicuousness, thus resolving the contradiction between visual effectiveness and cleaning ease
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The wavy design enhances the mark's conspicuousness and legibility by reducing mud adhesion, ensuring clear visibility and a stylish appearance.
Implementation Method 1
allows light that irradiates the mark to be reflected in a large number of different directions. This generates variations of light and shadow parts on the mark
Data Source
AI summary
A tire includes at least one mark on a sidewall. The mark includes an outer surface including a wavy curved face having two or more and four or fewer peaks. More specifically, the mark includes an outer surface having two or more and four or fewer ridge-like curved faces extending in parallel to each other. The mark may include a circular protrusion protruding axially outward around an entire edge of the mark, and may thus be fringed with the circular protrusion.